# -*- coding: utf-8 -*-
# Copyright 2023 Ant Group CO., Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
# in compliance with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed under the License
# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
# or implied.

import re
import string
from os import PathLike
from pathlib import Path
from typing import Any, Union


def render_templatefile(path: Union[str, PathLike], **kwargs: Any) -> None:
    path_obj = Path(path)
    raw = path_obj.read_text("utf8")

    content = string.Template(raw).substitute(**kwargs)

    render_path = path_obj.with_suffix("") if path_obj.suffix == ".tmpl" else path_obj

    if path_obj.suffix == ".tmpl":
        path_obj.rename(render_path)

    render_path.write_text(content, "utf8")


CAMELCASE_INVALID_CHARS = re.compile(r"[^a-zA-Z\d]")


def string_camelcase(string: str) -> str:
    """Convert a word  to its CamelCase version and remove invalid chars

    >>> string_camelcase('lost-pound')
    'LostPound'

    >>> string_camelcase('missing_images')
    'MissingImages'

    """
    return CAMELCASE_INVALID_CHARS.sub("", string.title())